CN119705622B - Vehicle chassis and vehicles - Google Patents
Vehicle chassis and vehiclesInfo
- Publication number
- CN119705622B CN119705622B CN202311276974.8A CN202311276974A CN119705622B CN 119705622 B CN119705622 B CN 119705622B CN 202311276974 A CN202311276974 A CN 202311276974A CN 119705622 B CN119705622 B CN 119705622B
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- beams
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Abstract
本发明提供了一种车辆底盘及车辆，本发明的车辆底盘具有分设在左右两侧的连接梁，以及位于两侧所述连接梁之间的电池包；两侧所述连接梁均沿整车前后方向延伸，并分别设置在车身中同侧门槛梁的下方；所述电池包的左右两侧与两侧所述连接梁分别相连，且所述电池包内设有沿整车左右方向延伸的内部横梁，所述内部横梁与两侧所述连接梁在整车左右方向上的投影至少部分重叠。本发明通过电池包两侧的连接梁，以及电池包中的内部横梁的设置，可增加电池包应对侧碰的能力，可增加车辆侧碰时电池包的安全性，而利于提升整车安全品质。
The present invention provides a vehicle chassis and a vehicle. The vehicle chassis of the present invention has connecting beams disposed on left and right sides, and a battery pack located between the connecting beams. The connecting beams on both sides extend in the front-to-rear direction of the vehicle and are respectively disposed below the door sill beam on the same side of the vehicle body. The left and right sides of the battery pack are respectively connected to the connecting beams on both sides, and the battery pack is provided with an internal crossbeam extending in the left-to-right direction of the vehicle. The internal crossbeam at least partially overlaps with the projections of the connecting beams on both sides in the left-to-right direction of the vehicle. The present invention, through the provision of connecting beams on both sides of the battery pack and the internal crossbeam within the battery pack, can enhance the battery pack's ability to cope with side collisions, increase the safety of the battery pack during side collisions, and thus improve the safety quality of the entire vehicle.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a vehicle chassis. The invention also relates to a vehicle provided with the vehicle chassis.
Background
Along with the gradual increase of the permeability of new energy vehicle types, pure electric vehicle types and hybrid electric vehicle types with battery packs are increasingly favored by vehicle buyers. Taking a pure electric vehicle as an example, a battery pack is generally arranged below a passenger cabin, so that in order to provide enough endurance, the weight of a vehicle body is required to be reduced as much as possible, and meanwhile, the battery pack with larger specification is required to be configured.
However, the safety of the battery pack when the vehicle collides is also receiving more and more attention while improving the endurance of the whole vehicle. In the prior art, the battery pack below the passenger cabin generally depends on the threshold beams at two sides of the vehicle body to resist the collision of the whole vehicle, and particularly, the impact force during side collision is limited by the structural strength of the threshold beams, so that the capability of the battery pack for resisting the side collision impact can be influenced, and the improvement of the collision safety of the battery pack is not facilitated.
Disclosure of Invention
In view of the above, the present invention is directed to a vehicle chassis to facilitate the improvement of the crash safety of a battery pack.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
a vehicle chassis has connecting beams separately provided on left and right sides, and a battery pack located between the connecting beams on both sides;
The connecting beams at both sides extend along the front-back direction of the whole vehicle and are respectively arranged below the side sill beams in the vehicle body;
the left and right sides of the battery pack are respectively connected with the connecting beams on the two sides, and an internal cross beam extending along the left and right directions of the whole vehicle is arranged in the battery pack and at least partially overlaps with the projections of the connecting beams on the left and right directions of the whole vehicle.
Further, the left and right sides of battery package are equipped with the linking bridge respectively, each side linking bridge connects in the homonymy the below of tie beam, just inside crossbeam with both sides linking bridge is at least partly overlapped in the left and right directions of whole car projection.
Further, the left side and the right side of the battery pack are respectively provided with a side frame, the connecting brackets on each side are connected to the side frames on the same side, and the internal cross beam is connected between the side frames on both sides;
at least one of the side frames, the connecting brackets and the inner cross beam adopts extruded aluminum profiles.
Further, the vehicle chassis is provided with a front auxiliary frame positioned at the front part of the vehicle and a rear auxiliary frame positioned at the rear part of the vehicle, and the connecting beams at two sides are connected between the front auxiliary frame and the rear auxiliary frame;
the front subframe is disposed below a front cabin in the vehicle body, the rear subframe is disposed below a rear floor in the vehicle body, and the front subframe, the rear subframe, and both sides the connection beams are contoured to accommodate a battery pack installation space of the battery pack.
Further, the front auxiliary frame is provided with front auxiliary frame longitudinal beams which are respectively arranged at the left side and the right side, and the rear auxiliary frame is provided with rear auxiliary frame longitudinal beams which are respectively arranged at the left side and the right side;
in the left-right direction of the whole vehicle, the connecting beams on each side are positioned on the same side on one side, close to the outside of the vehicle, of the front auxiliary frame longitudinal beam and the rear auxiliary frame longitudinal beam.
Further, a front cross beam is arranged at the rear side of the front auxiliary frame, the front cross beam is provided with a cross beam main body, and the left end and the right end of the cross beam main body are connected with overhanging sections;
The outer extending sections extend to one side outside the vehicle along the left-right direction of the whole vehicle, the front auxiliary frame longitudinal beams on two sides are connected to the cross beam main body, the connecting beams on two sides are respectively connected to the outer extending sections on the corresponding sides, and the connecting beams are connected with the front auxiliary frame longitudinal beams through the front cross beams.
Furthermore, the rear ends of the connecting beams at each side are respectively provided with a connecting section which is obliquely arranged, the connecting beams at each side are connected with the front ends of the rear auxiliary frame longitudinal beams at the same side through the connecting sections, and the distance between the connecting sections at the two sides is gradually reduced from front to rear in the front-rear direction of the whole vehicle;
And a rear cross beam is connected between the positions where the rear auxiliary frame longitudinal beams on two sides are connected with the connecting sections, and the battery pack installation space is formed among the front cross beam, the rear cross beam and the connecting beams on two sides.
Further, the connecting beams on both sides are integrally formed, and/or,
The length of the connecting beam in the front-back direction of the whole vehicle is adjustable at both sides, fixing structures are respectively arranged on the connecting beam at both sides and used for fixing the length of the connecting beam after adjustment.
Further, in the left-right direction of the whole vehicle, a side pedal mounting plate is connected to one side of the connecting beam facing the outside of the vehicle, the side pedal mounting plate extends along the front-rear direction of the whole vehicle, and a side pedal mounting surface is arranged at the top of the side pedal mounting plate.
Compared with the prior art, the invention has the following advantages:
According to the vehicle chassis disclosed by the invention, the connecting beams at the two sides of the battery pack and the internal cross beams in the battery pack are arranged, so that when a vehicle collides laterally, the connecting beams at the side parts can collapse and absorb energy, and can transmit and disperse collision force, meanwhile, the internal cross beams in the battery pack can also provide support to protect modules and the like in the battery pack from being stressed, thereby the capability of the battery pack for coping with the side collision can be increased, the safety of the battery pack when the vehicle collides laterally is increased, and the safety quality of the whole vehicle is improved.
In addition, the left and right sides of the battery pack are connected below the connecting beam through the connecting support, the battery pack can be conveniently connected, the projection of the inner cross beam and the connecting support is overlapped, the arrangement strength of the side connecting support can be ensured while the inner cross beam has better supporting effect, and the reliability of the battery pack assembly can be increased. The connecting bracket is connected to the side frames, the inner cross beam is positioned between the side frames on two sides, and the side frames, the connecting bracket and the inner cross beam are extruded aluminum profiles, so that the connecting bracket can be conveniently arranged on the battery pack, and meanwhile, the structural strength of the side frames, the connecting bracket and the inner cross beam can be ensured, and the integral rigidity of the battery pack is ensured.
The both sides tie-beam is connected before, between the back sub vehicle frame, and limit out battery package installation space jointly by preceding sub vehicle frame, back sub vehicle frame and both sides tie-beam, can have and bear formula car body structural feature, can utilize the less advantage of bearing formula car body weight, do benefit to the lightweight that realizes the automobile body, can improve whole car duration, simultaneously, with the help of the connection setting of both sides tie-beam, constitute battery package ring frame structure, also can make the battery package move along with ring frame structure during the collision, and then can reduce the collision impact that the battery package received, in order to increase the collision security of battery package.
And secondly, the connecting beams on each side are positioned on one side, close to the outside of the vehicle, of the front auxiliary frame longitudinal beam and the rear auxiliary frame longitudinal beam on the same side, so that Y-direction section change of the front part and the rear part of the bearing type vehicle body is facilitated, and the matching design requirement between the chassis and the vehicle body framework in the bearing type vehicle body is met. The front cross beam is arranged on the rear side of the front auxiliary frame, the connecting beam is connected with each front auxiliary frame longitudinal beam through the front cross beam, connection between the connecting beam and the front auxiliary frame is facilitated, and change of the Y-direction section of the front part of the vehicle body can be conveniently realized.
The rear ends of the connecting beams at all sides are provided with inclined connecting sections, connection with the rear auxiliary frame longitudinal beams is facilitated, the distance between the connecting sections at both sides is gradually reduced from front to back, Y-direction section change of the rear part of the bearing type automobile body is facilitated, and matching design requirements between the chassis and the automobile body framework in the bearing type automobile body are met. Through the setting of rear cross beam, not only can increase the anterior structural strength and the rigidity of back sub vehicle frame to and for the battery package rear end provides the mounting point, and battery package installation space forms between front cross beam, rear cross beam and both sides tie-beam, also does benefit to and makes the annular frame structure that forms become the rigidity and encircle the structure, and then can promote the collision security of battery package better.
In addition, the connecting beam is integrally formed, so that the preparation of the connecting beam can be facilitated, and the structural strength of the connecting beam can be ensured. The length of both sides tie-beam is adjustable to set up the fixed knot who is used for fixed tie-beam length constructs, can do benefit to the wheelbase change that satisfies between the different motorcycle types, makes preceding, back sub vehicle frame become the sharing piece, helps realizing the platform design, in order to reduce whole car research and development cost.
Through connecting the side at the tie-beam outside and stepping on the mounting panel, when stepping on the assembly basis as the side, also can be as side collision energy-absorbing structure, play collision energy-absorbing effect, can realize a dual-purpose to save the side and step on the mounting frame, be favorable to realizing the lightweight design of automobile body.
Another object of the invention is to propose a vehicle in which a vehicle chassis as described above is provided.
The vehicle has the same beneficial effects as the vehicle chassis, and is not described herein.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic view of a vehicle chassis structure according to an embodiment of the present invention as assembled in a vehicle body;
FIG. 2 is a schematic view of a vehicle chassis structure according to an embodiment of the present invention;
Fig. 3 is a schematic structural view of a battery pack according to an embodiment of the present invention;
FIG. 4 is a schematic view of an arrangement of an inner cross member according to an embodiment of the present invention;
FIG. 5 is a schematic view showing the fit of the inner cross beam, the connecting brackets and the connecting beams according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating connection of a first connecting member according to an embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating connection of a second connector according to an embodiment of the present invention;
Fig. 8 is a schematic view showing the construction of a battery pack installation space according to an embodiment of the present invention;
FIG. 9 is a schematic view of a front subframe according to an embodiment of the present invention;
FIG. 10 is a schematic view of a rear subframe according to an embodiment of the present invention;
FIG. 11 is a schematic cross-sectional view of a connecting beam according to an embodiment of the present invention;
FIG. 12 is a schematic view of a rear cross member according to an embodiment of the present invention;
FIG. 13 is a schematic view of a rear subframe impact beam and rear subframe crash box according to an embodiment of the invention;
FIG. 14 is a schematic view of an arrangement of a side mounting plate according to an embodiment of the present invention;
FIG. 15 is a schematic view of a portion of the structure of FIG. 14;
FIG. 16 is a schematic view of a structure of a side mounting plate and a connecting beam according to an embodiment of the present invention when extruded aluminum is used;
FIG. 17 is a schematic structural view of a side-pedal mounting plate and a connecting beam according to an embodiment of the present invention when a steel rolling structure is adopted;
FIG. 18 is a schematic view of a length adjustment structure for a connecting beam according to an embodiment of the present invention;
reference numerals illustrate:
1. A connecting beam; 2, a battery pack, 3, a threshold beam, 4, a front auxiliary frame, 5, a rear auxiliary frame and 6, a side pedal mounting plate;
1a, connecting sections, 1b, transverse reinforcing ribs, 1c, longitudinal beam sections, 1d, fixing structures, 201, connecting brackets, 202, inner cross beams, 203, side frames, 401, front subframe longitudinal beams, 402, front subframe front cross beams, 403, front subframe middle cross beams, 404, front cross beams, 404a, a crossbeam main body, 404b, overhanging sections, 405, front subframe crash beams, 406, front subframe crash boxes, 501, rear subframe longitudinal beams, 502, rear subframe front cross beams, 503, rear subframe rear cross beams, 504, rear cross beams, 5041, flat sections, 5042, bending sections, 505, rear subframe crash beams, 506, rear subframe crash boxes, 6a, side pedal mounting surfaces, 6b, collapsing guide ribs, 6c, vertical reinforcing ribs;
100. 200 parts of threaded pipes, 300 parts of first connecting pieces, 300 parts of threaded sleeves, 400 parts of second connecting pieces;
A. The device comprises a length adjusting position, a longitudinal beam connecting position, a battery pack mounting space, a second connecting piece connecting position, a first connecting piece connecting position and a second connecting piece connecting position.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be noted that, if terms indicating an orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. are presented, they are based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, if any, are also used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, in the description of the present invention, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the components may be fixedly connected, detachably connected or integrally connected, mechanically connected or electrically connected, directly connected or indirectly connected through an intermediate medium, or communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in combination with specific cases.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
Example 1
The present embodiment relates to a vehicle chassis, which is applied to a new energy vehicle type having a battery pack, and is preferably a pure electric vehicle type, and which can increase the capability of the battery pack to cope with side collision, thereby being capable of increasing the safety of the battery pack when the vehicle side collision occurs.
As shown in fig. 1 to 5, the vehicle chassis of the present embodiment has connection beams 1 provided separately on the left and right sides, and a battery pack 2 provided between the connection beams 1 on both sides.
Wherein, both sides tie-beam 1 all extends along whole car fore-and-aft direction to set up respectively in the automobile body with the below of side door threshold roof beam 3. The left and right sides of the battery pack 2 are respectively connected with the two side connecting beams 1, and an inner cross beam 202 extending along the left and right direction of the whole vehicle is arranged in the battery pack 2, and the projections of the inner cross beam 202 and the two side connecting beams 1 in the left and right direction of the whole vehicle are at least partially overlapped.
At this time, as set up above, through the tie-beam 1 of battery package 2 both sides to and the setting of the inside crossbeam 202 in the battery package 2, when the vehicle takes place the side and bumps, the tie-beam 1 of lateral part can collapse the energy-absorbing to can transmit the dispersion to collision force, the inside crossbeam 202 of battery package 2 inside also can provide the support simultaneously, protect the module etc. in the battery package 2 not atress, thereby this embodiment can increase the ability that the battery package 2 should bump on the side, reaches the effect that increases the security is bumped on the battery package 2 side.
Based on the above overall description, specifically, as shown in fig. 2 to 5, as a preferred embodiment, the internal cross members 202 located in the battery pack 2 may be arranged in a plurality of spaced arrangement, and meanwhile, the present embodiment is also provided with connection brackets 201 on the left and right sides of the battery pack 2, respectively, and each side connection bracket 201 is connected below the same side connection beam 1, so as to realize between the side of the battery pack 2 and the connection beam 1, and at the same time, the internal cross members 202 in the battery pack 2 also overlap at least partially with the projections of the connection brackets 201 on the two sides in the left and right directions of the whole vehicle.
It can be understood that by providing the connection brackets 201 at both sides of the battery pack 2 and allowing the connection brackets 201 at each side to be connected under the connection beam 1 by the connection members, it is possible to facilitate the connection between the battery pack 2 and the connection beam 1. The inner cross beam 202 in the battery pack 2 is overlapped with the projection of the connecting bracket 201 in the left-right direction of the whole vehicle, so that the arrangement strength of the side connecting bracket 201 can be ensured while the inner cross beam 202 has better supporting effect, thereby being beneficial to increasing the reliability of the assembly of the battery pack 2.
In this embodiment, as a preferred implementation manner, the side frames 203 are provided on both the left and right sides of the battery pack 2, the connecting brackets 201 on the left and right sides of the battery pack 2 are fixedly connected to the side frames 203 on the corresponding sides, and the inner cross member 202 is connected between the side frames 203 on both sides, and preferably, the side frames 203, the connecting brackets 201 and the inner cross member 202 may be made of extruded aluminum profiles.
Thus, it can be understood that the connecting brackets 201 on each side are connected to the side frames 203 on the same side, and the internal cross members 202 are positioned between the side frames 203 on both sides, and the side frames 203, the connecting brackets 201 and the internal cross members 202 are extruded aluminum profiles, which not only facilitates the arrangement of the connecting brackets 201 on the battery pack 2, but also ensures the structural strength of the side frames 203, the connecting brackets 201 and the internal cross members 202, thereby helping to ensure the rigidity of the battery pack 2 as a whole.
When the side frames 203 and the connection brackets 201 are both made of extruded aluminum, it is preferable that the connection brackets 201 and the side frames 203 are integrally formed. In this way, the preparation of the connection brackets 201 and the side frames 203 can be facilitated, and at the same time, the structural strength of the connection brackets 201 and the side frames 203 can be ensured, and the reliability of the battery pack 2 after assembly can be ensured.
It should be noted that, in addition to the side frames 203 having the left and right sides, similar frame structures are provided at the front and rear ends of the battery pack 2, and extruded aluminum profiles may be generally used for the front and rear end frame structures. In particular, as shown in fig. 5, the side frames 203 may be configured to have a triangular cross section, for example, so as to better increase the strength of the side frames 203 by utilizing the characteristic of the large strength of the triangular structure.
In addition to the extruded aluminum profiles for the side frames 203, the connection brackets 201, and the inner cross members 202, it should be noted that, of course, it is also possible to use extruded aluminum profiles for a part of the side frames 203, the connection brackets 201, and the inner cross members 202 according to design requirements in the embodiment.
In addition, in this embodiment, besides the connection between the inner beam 202 and the connecting bracket 201 through the side frame 203, it is possible to ensure that the projection between the inner beam 202 and the connecting brackets 201 at least partially overlaps, if the embodiment is implemented such that the end of the inner beam 202 penetrates the side frame 203 and is directly connected to the connecting bracket 201.
In this embodiment, based on the arrangement of the connection brackets 201 on the left and right sides of the battery pack 2, in practical implementation, each side connection bracket 201 may be generally connected below the connection beam 1 on the same side through a connection member to implement the assembly of the battery pack 2, and the connection member may be connected with a threaded sleeve provided in the connection beam 1.
At this time, in the present embodiment, the above-described connection member may be constituted by, for example, the first connection member 200 in fig. 6 and the second connection member 400 in fig. 7, and accordingly, the threaded sleeve provided in the connection beam 1 corresponding to the first connection member 200 may be referred to as the first threaded sleeve 100, and the threaded sleeve provided in the connection beam 1 corresponding to the second connection member 400 may be referred to as the second threaded sleeve 300. Also, the top of the second screw grommet 300 is also provided to protrude from the connecting beam 1 and is disposed in correspondence with the battery pack mounting structure provided in the rocker beam 3.
Through the cooperation of the above first connecting member 200 and the first threaded sleeve 100, the present embodiment can connect the battery pack 2 and the connecting beam 1 together, and at the same time, the battery pack 2, the connecting beam 1 and the threshold beam 3 can be connected together through the above second connecting member 400 passing through the second threaded sleeve 300 and being connected to the battery pack mounting structure in the threshold beam 3.
In this way, the second connecting piece 400 can connect the battery pack 2, the connecting beam 1 and the threshold beam 3 together, and the embodiment can synchronously realize the installation of the whole body formed by the connecting beams 1 and the battery pack 2 on the two sides in the vehicle body on the basis of realizing the installation of the battery pack 2, thereby realizing the integrated design of the partial installation structure of the battery pack 2. By utilizing the integrated design, the connecting structure between the connecting beam 1 and the vehicle body can be not independently arranged on two sides of the battery pack 2, thereby being beneficial to the reduction of the cost of the whole vehicle mounting structure.
In this embodiment, it should be noted that, as a preferred embodiment, for the second connecting member 400 connecting the battery pack 2, the connecting beam 1 and the threshold beam 3, it may be generally distributed near the front and rear four angular positions of the battery pack 2, that is, the second connecting members 400 on each side are arranged at the positions indicated by reference symbol m shown in fig. 2. For the above-described first connection member 200 that connects only the battery pack 2 and the connection beam 1 together, it may be provided in a plurality of spaced apart and, for example, may be disposed at the positions indicated by the reference numeral n in fig. 2, respectively.
In addition, in the embodiment, the first threaded pipe 100 or the second threaded sleeve 300 may have a pipe body structure having a connecting thread formed on an inner wall thereof, and the first connector 200 and the second connector 400 may have bolts having a proper length. The battery pack mounting structure provided in the rocker beam 3 may employ projection nuts or the like to achieve the screw connection with the second connector 400.
In the present embodiment, as a possible implementation, the front and rear ends of each side connecting beam 1 may be connected to the same side sill beam 3, for example, and they may be specifically connected by welding, screwing, riveting, or the like. At this time, the front and rear ends of the connecting beam 1 are made to be connected to the threshold beam 3, the arrangement of the connecting beam 1 on both sides in the vehicle body can be achieved, and the reliability of the arrangement of the connecting beam 1 in the vehicle body can be ensured.
Instead of having both ends of each side connecting beam 1 connected to the rocker beams 3 on the same side, as another possible implementation, the vehicle chassis of the present embodiment also has a front subframe 4 located at the front of the vehicle and a rear subframe 5 located at the rear of the vehicle, as shown in fig. 2 in combination with fig. 8, and the side connecting beams 1 are also connected between the front subframe 4 and the rear subframe 5.
Wherein the front subframe 4 is disposed below a front cabin in a vehicle body, the rear subframe 5 is disposed below a rear floor in the vehicle body, and the front subframe 4, the rear subframe 5, and the connection beams 1 on both sides are also enclosed to form a battery pack installation space Q accommodating the battery pack 2.
At this time, based on the above arrangement of the two-side connecting beams 1 between the front and rear sub-frames, it should be noted that the conventional vehicle body mainly includes a load-bearing vehicle body and a non-load-bearing vehicle body, and the differences between them are mainly in terms of structure, weight, riding comfort, and the like.
The non-bearing type vehicle body is generally composed of a frame girder and a vehicle body, the frame is used for installing an engine, a gearbox, a suspension and other parts, the vehicle body is only used for providing a closed environment required by driving and has no bearing function, and meanwhile, the non-bearing type vehicle body is large in weight, high in gravity center, relatively poor in operability and low in travelling comfort on a paved road. But because the frame girder can provide very good rigidity, chassis intensity is higher, and anti jolt performance is good, has better stationarity and security to also easily repacking.
The bearing type vehicle body is not provided with a rigid frame, parts in the vehicle are directly arranged on the vehicle body, the whole vehicle body is used as a force bearing structure to bear the action of various load forces, and meanwhile, the bearing type vehicle body is light in weight, low in gravity center, good in operability and easy to assemble, and can obtain better comfortableness when the vehicle runs on a paved road. However, the torsional rigidity and the bearing capacity of the bearing type car body are weaker, and the whole safety is relatively poor because the bearing type car body is not provided with a rigid car frame and is usually only reinforced at the parts such as the car head, the side walls, the car tail, the bottom plate and the like.
Thus, in order to fully utilize the advantages of the load-bearing vehicle body and to improve the disadvantages of the load-bearing vehicle body, the present embodiment thus creatively connects the both-side connecting beams 1 between the front and rear sub-frames in the vehicle chassis structure, and thus makes the vehicle chassis of the present embodiment a chassis structure developed based on the load-bearing vehicle body, for new energy vehicle types, particularly, pure electric vehicle types.
It can be appreciated that by adopting the bearing type vehicle body structure with the front auxiliary frame and the rear auxiliary frame, the embodiment can utilize the characteristic of smaller weight of the bearing type vehicle body to realize the light weight of the vehicle body, thereby improving the cruising ability of the whole vehicle. Meanwhile, through the arrangement of the connecting beams 1 on two sides, the front auxiliary frame and the rear auxiliary frame are connected into a whole, and the front auxiliary frame 4, the rear auxiliary frame 5 and the connecting beams 1 on two sides jointly define a battery pack installation space Q, which can also form a battery pack annular frame structure by means of the connection arrangement of the connecting beams 1, so that the battery pack 2 can move along with the annular frame structure when a vehicle collides, and further the collision impact suffered by the battery pack 2 can be reduced, so that the effect of increasing the collision safety of the battery pack 2 is achieved.
In the present embodiment, the front subframe 4 has front subframe rails 401 provided on the left and right sides, and the rear subframe 5 has rear subframe rails 501 provided on the left and right sides, and as a preferable embodiment, the side connecting members 1 are also located on the same side as the front subframe rails 401 and the rear subframe rails 501 on the outside of the vehicle in the left and right directions of the whole vehicle.
At this time, as shown in fig. 2 and 8, the side connecting beams 1 are located on the same side of the front sub-frame rail 401 and the rear sub-frame rail 501 near the side outside the vehicle, and this embodiment helps to realize the Y-directional cross-section change of the front and rear parts of the load-bearing vehicle body, so as to meet the matching design requirement between the chassis and the vehicle body skeleton in the load-bearing vehicle body.
In the present embodiment, a front cross member 404 is also provided at the rear portion of the front subframe 4, and the front ends of the side connecting members 1 are connected to the left and right ends of the front cross member 404, respectively, while the rear ends of the side connecting members 1 are connected to the front ends of the side rear subframe side members 501, respectively. Thus, the front cross member 404, the rear sub-frame 5, and the connection members 1 on both sides together define a battery pack mounting space Q for mounting the battery pack 2.
It should be noted that, as a preferred embodiment, the front cross member 404 may be used as a part of the front subframe 4, and specifically, a front subframe rear cross member located at the rear end of the front subframe 4. However, instead of being a front sub-frame rear cross member, the front cross member 404 of the present embodiment may be connected between the front ends of the side connecting beams 1 and independently of the beam body structure provided to the front sub-frame 4, and in this case, the front cross member 404 is integrally connected to the side connecting beams 1 as a unitary frame structure and is also connected to the front sub-frame 4 to achieve connection between the side connecting beams 1 and the front sub-frame 4.
Taking the front cross member 404 as the rear cross member of the front subframe as an example, in the specific implementation, the front subframe 4 of the present embodiment is only used to refer to the front subframe structure in the existing load-bearing vehicle body, and generally, as shown in fig. 9, the front subframe 4 has front subframe stringers 401 arranged on the left and right sides, a front subframe front cross member 402 and a front subframe middle cross member 403 are connected between the front subframe stringers 401 on both sides, and the rear ends of the front subframe stringers 401 on both sides are connected to the front cross member 404 as the rear cross member of the front subframe.
It should be noted that where the front cross member 404 is provided independently of the front subframe 4, it is typically also connected to the rear ends of the side front subframe rails 401. Further, when the front cross member 404 is provided independently of the front subframe 4, it may be provided selectively as needed for the front subframe rear cross member in the front subframe 4.
As further shown in fig. 9, the present embodiment is also provided with front subframe impact beams 405 connected to the side front subframe rails 401 at the front ends of the front subframe 4, and the front subframe impact beams 405 are connected to the front ends of the side front subframe rails 401 specifically by front subframe energy absorbing boxes 406.
In the front subframe 4 of the present embodiment, the front cross member 404 also has a cross member main body 404a located in the middle and outer protrusions 404b connected to both right and left ends of the cross member main body 404 a. The rear ends of the front side sub-frame rails 401 are connected to the cross member main body 404a, and the end overhanging sections 404b extend to the vehicle exterior side in the vehicle left-right direction, and the front ends of the side connecting members 1 are also connected to the same side overhanging sections 404b, thereby realizing connection with the front side sub-frame rails 401 through the front cross member 404.
It will be appreciated that by providing the overhanging section 404a in the front cross member 404, it is possible to facilitate the connection with the two-sided connecting beam 1. Meanwhile, still referring to fig. 8, by connecting the front sub-frame rail 401 on the left and right sides in the front sub-frame 4 with the cross member main body 404a in the front cross member 404, it also contributes to achieving a Y-directional (left and right direction of the whole vehicle) cross-sectional change of the front portion of the load-bearing vehicle body, that is, each side connecting rail 1 is not in line with the front sub-frame rail 401, but bends at the joint position therebetween, and thereby the vehicle body Y-directional cross-sectional dimension becomes smaller at the front sub-frame 4.
The change of the Y-direction section of the front part of the vehicle body obviously basically has the same front and back of the Y-direction section of the frame girder in the non-bearing vehicle body, and the embodiment also meets the matching design requirement between the chassis and the vehicle body framework in the bearing vehicle body through the dimensional change of the Y-direction section of the front part of the vehicle body.
In this embodiment, as a preferred embodiment, as shown in fig. 8 and 10, the rear end of each side connecting beam 1 is provided with a connecting section 1a arranged obliquely, each side connecting section 1a is connected to the front end of the same side rear sub-frame rail 501 through the connecting section 1a, and the distance between the side connecting sections 1a is also set to decrease from front to rear in the front-rear direction of the whole vehicle.
At this time, by providing the inclined connecting section 1a at the rear end of each side connecting beam 1, it is also possible to facilitate the connection between the connecting beam 1 and the rear sub-frame rail 501, and the distance between the connecting sections 1a at both sides is set to be smaller from front to rear, so that it is also possible to facilitate the Y-directional cross-sectional change of the rear part of the load-bearing vehicle body similar to the design of the above-described overhanging section 404b, so as to not only satisfy the matching design requirement between the chassis and the vehicle body skeleton in the load-bearing vehicle body, but also become one of the main differences from the non-load-bearing vehicle body.
In this embodiment, it should be noted that, in the implementation, the two-side connecting beams 1 may be, for example, integrally formed beam structures, and specifically, integrally closed structures, and the cross section thereof may be as shown in fig. 11. In this case, the connecting beam 1 may be integrally formed with the front cross member 404 and the rear sub frame rail 501 of the front and rear sub frames. At this time, it can be understood that by utilizing the closed section, the structural strength of the connecting beam 1 can be ensured by means of the characteristic of large structural strength of the cavity, and the front subframe 4, the connecting beam 1 and the rear subframe 5 which are integrally connected can have better structural strength and rigidity by integrally forming the connecting beam 1 and the front subframe and the rear subframe.
Of course, the connecting beam 1 of the present embodiment may have other structures besides an integral structure, and may have, for example, a steel profile welded structure, an aluminum alloy profile extruded structure, or the like. In addition, in addition to being integrally connected to the front cross member 404 and the rear sub frame rail 501, it is also possible to provide the connecting beam 1 in a detachable manner in practice. In this case, the detachable manner may generally adopt a screw connection structure, and as shown in fig. 15, the connection position may be located at a position B near the four angular positions, and the connection direction may be an X direction (front-rear direction of the whole vehicle) or a Y direction, and the connection manner may be splicing or flat panel butt joint.
Of course, in order to ensure the reliability of the force transmission of the connecting beam 1, the above-mentioned connecting direction is preferably the X direction, and in order to ensure the convenience of operation, the connecting mode is also preferably flat butt joint. In this way, in the position indicated by each reference symbol B in fig. 15, the connection beams 1 on each side may be provided by a screw structure connected in the X direction in a flat plate butt joint manner.
In this embodiment, as shown in fig. 8 and 10, in the specific implementation, the rear subframe 5 is just like a rear subframe structure in an existing load-bearing vehicle body, and in terms of structure, as a preferred implementation, a rear subframe front cross member 502 and a rear subframe rear cross member 503 are connected between the rear subframe stringers 501 on both sides, further, a rear cross member 504 is connected between the rear subframe stringers 501 on both sides and the connection beam 1, that is, between the rear subframe stringers 501 on both sides and the connection position of the connection section 1a, as well.
At this time, the battery pack mounting space Q is formed between the rear cross member 504, the front cross member 404, and the both-side connection members 1, based on the arrangement of the rear cross member 504. Moreover, based on the arrangement of the front beam 404 and the rear beam 504, in the specific implementation, the mounting points of the battery pack can be respectively arranged on the front beam 404 and the rear beam 504, and meanwhile, the mounting brackets are respectively arranged at the front end and the rear end of the battery pack 2, so that the front end of the battery pack 2 can be mounted on the front beam 404 through bolts, and the rear end of the battery pack 2 can also be mounted on the rear beam 504 through bolts, thereby ensuring the stability of the battery pack 2 after being assembled in a vehicle body.
It will be appreciated that, through the above-mentioned arrangement of the rear cross member 504, not only the structural strength and rigidity of the front portion of the rear subframe 5 can be increased, but also the mounting point can be provided for the rear end of the battery pack, and meanwhile, through making the battery pack mounting space Q formed between the rear cross member 504, the front cross member 404 and the two-side connecting beams 1, the present embodiment is also advantageous in that the formed annular frame structure becomes a rigid encircling structure adapted to the shape of the battery pack, so that the collision safety of the battery pack can be better improved.
In addition, the rear cross member 504 is provided between the connection positions of the both side connection sections 1a and the rear sub frame rail 501, so that by connecting the end portions of the rear cross member 504 at the connection positions between the connection sections 1a of the respective sides and the rear sub frame rail 501, it is not only helpful to secure the connection strength of the rear cross member 504, but also to better promote the dynamic rigidity of the front position of the rear sub frame 5.
In particular, the rear cross member 504 of the present embodiment may also be an integrally formed closed structure, for example, so as to have a high structural strength. In addition, in order to further increase the strength of the rear cross member 504 and to facilitate the installation of the rear end of the battery pack, the rear cross member 504 of the present embodiment may be designed to be arranged in a downward arch in the up-down direction of the entire vehicle, with a straight section 5041 in the middle, and bending sections 5042 on both the left and right sides, as shown in fig. 12. The bending sections 5042 on both sides are disposed in an upward-inclined manner, and are respectively connected to the rear sub-frame rails 501 on the same side.
As still shown in fig. 8 and 10, unlike the conventional rear subframe structure, the present embodiment is provided with a rear subframe impact beam 505 connected to both side rear subframe side members 501 at the rear end of the rear subframe 5 as a preferred embodiment. Thus, it can be appreciated that by providing the rear subframe impact beam 505 at the rear end of the rear subframe 5, on the one hand, it can promote the rear impact force transmission performance of the rear subframe 5, and can make the impact force better dispersed to the rear subframe beams 501 on both sides via the rear subframe impact beam 505, so as to be transmitted forward along the rear subframe beams 501, avoiding the forces per unit location, the impact force being difficult to disperse, and causing excessive deformation. On the other hand, by providing the rear sub-frame collision avoidance beam 505, the rear sub-frame collision avoidance beam 505 can be used as a pedestrian at the rear of the vehicle to avoid being involved in the beam, and thus the safety in the reversing process can be improved.
In the specific implementation, as shown in fig. 13, the rear subframe collision avoidance beam 505 may structurally refer to the front subframe collision avoidance beam 405 in the front subframe 4, and may be a sheet metal stamping structure, or may also be an aluminum alloy extrusion profile. Meanwhile, on the basis of the arrangement of the rear subframe collision-preventing beams 505, the rear ends of the rear subframe side beams 501 on both sides are preferably connected with the rear subframe energy-absorbing boxes 506, and the rear subframe collision-preventing beams 505 are particularly connected with the rear subframe energy-absorbing boxes 506 on both sides.
At this time, the rear subframe crash box 506 is similar to the front subframe crash box 406 of the front subframe 4, and is constructed by a conventional crash box structure used in the existing vehicle body. Moreover, it can be appreciated that the rear subframe rear impact beam 505 is connected to the rear subframe rail 501 via the rear subframe energy absorber 506, which is capable of collapsing and absorbing energy via the rear subframe energy absorber 506 to facilitate further improvement of vehicle rear impact safety.
In addition, it should be further noted that, through the arrangement of the rear subframe anti-collision beam 505, the front subframe anti-collision beam 405 at the front end can be matched, so that the chassis structure of the embodiment obtains better front collision and rear collision safety performance, and meanwhile, when the chassis structure of the embodiment is assembled into a whole vehicle, the front subframe anti-collision beam 405 and the rear subframe anti-collision beam 505 can form an upper and lower double anti-collision beam collision force transmission design together with the front and rear anti-collision beams in the upper vehicle body framework, thereby providing super-strong double protection effect.
As shown in fig. 14 and 15, in the present embodiment, as a preferred embodiment, the side pedal mounting plate 6 may be further connected to the side of each side connecting beam 1 facing the outside of the vehicle in the vehicle left-right direction. The side pedal mounting plates 6 on each side extend in the front-rear direction of the entire vehicle, and a side pedal mounting surface 6a is provided on top of each side pedal mounting plate 6.
At this time, by attaching a side pedal plate, a side pedal garnish, and the like to the side pedal attachment surface 6a, a side pedal for assisting the driver in getting on and off the vehicle can be formed. By connecting the side pedal mounting plate 6 to the outside of the connecting beam 1, it can be understood that the side pedal mounting plate can be used as a side pedal assembly foundation and can be used as a side collision energy absorption structure to play a role in collision energy absorption, so that one piece of two-purpose structure can be realized, the side pedal mounting framework is saved, and the lightweight design of a vehicle body is also facilitated.
In the specific implementation, the side pedal mounting plates 6 on the respective sides may be detachably connected to the same-side connecting beam 1 through a connecting assembly, for example. In this way, each side pedal mounting plate 6 is detachably connected to the connecting beam 1 on the same side through the connecting assembly, so that the assembly of the side pedal mounting plate 6 can be facilitated, and the later maintenance and replacement of the side pedal mounting plate 6 can be facilitated.
Of course, in addition to the above detachable arrangement, in the embodiment, the present embodiment may also make each side pedal mounting plate 6 integrally formed with the same-side connecting beam 1. So for the mounting panel 6 is stepped on to the side and the tie-beam 1 integrated into one piece, it can reduce the manufacturing cost of tie-beam 1 and the mounting panel 6 is stepped on to the side, and also can guarantee the structural strength of tie-beam 1 and the mounting panel 6 is stepped on to the side better to be favorable to promoting the overall rigidity of chassis structure.
For the side pedal mounting plate 6, which is detachably provided, specifically, for example, a steel profile or an aluminum alloy profile is used, and the connecting assembly may generally use a screw structure to fixedly connect the side pedal mounting plate 6 to the connecting beam 1. For the above-mentioned integrated molding of the side pedal mounting plate 6 and the connecting beam 1, for example, the side pedal mounting plate 6 and the connecting beam 1 may be made of one of steel section bars and aluminum alloy section bars, or the side pedal mounting plate 6 and the connecting beam 1 may be made of steel rolling structures.
As shown in fig. 16, it is an exemplary structure when the side step mounting plate 6 and the connecting beam 1 are both made of aluminum alloy, and in this structural form, in order to increase the structural strength of the connecting beam 1 and the side step mounting plate 6, a transverse reinforcing rib 1b and a vertical reinforcing rib 6c may be provided in both. Meanwhile, in order to improve the collision energy absorption effect of the side pedal mounting plate 6 when the vehicle collides side, a crumple guide rib 6b extending in a bending shape can be arranged at the bottom of the side pedal mounting plate 6.
At this time, the reinforcing ribs at the side pedal mounting plate 6 adopt the vertical reinforcing ribs 6c and the crumple guide ribs 6b, which can also enable the side pedal mounting plate 6 to have better crumple energy absorbing capability under the condition of properly increasing the structural strength of the position of the side pedal mounting plate 6, so that one side of the side pedal mounting plate 6 can be made into a crumple energy absorbing area, and the side impact energy absorbing effect can be improved. Unlike the side mounting plate 6, the side of the connecting beam 1 is provided with the transverse reinforcing ribs 1b, and the connecting beam 1 has stronger supporting rigidity when the vehicle is in side collision by utilizing the transverse supporting function of the transverse reinforcing ribs 1b, so that the side of the connecting beam 1 becomes a rigid frame area to better protect a battery pack positioned in the battery pack mounting space Q.
In this embodiment, besides the structure of the integrally formed connecting beam 1 and the side pedal mounting plate 6 with different cross sections as shown in fig. 16, of course, in practical implementation, the wall thickness of the connecting beam 1 side can be made larger than that of the side pedal mounting plate 6 side, so that the strength of the connecting beam 1 side can be further increased, the collapsing energy absorption of the side pedal mounting plate 6 side can be fully utilized, and the battery pack inside the connecting beam 1 can be protected.
As shown in fig. 17, an exemplary cross-sectional form of the side step mounting plate 6 and the connecting beam 1 is shown when a steel roll structure is adopted, and it should be noted that when the roll structure is adopted, the integrally formed side step mounting plate 6 and the connecting beam 1 generally adopt a "ri" cross-section as shown in fig. 17, and can be connected by a combination of laser welding and spot welding. However, instead of using a "sun" shaped cross section, it is of course possible to use other cross sections for the roll-formed side pedal mounting plate 6 and the connecting beam 1.
In this embodiment, based on the arrangement of the two side connecting beams 1, instead of making the two side connecting beams 1 an integral structure, as a preferred implementation manner, it is also possible to arrange the two side connecting beams 1 to be adjustable in length along the front-rear direction of the whole vehicle, and to simultaneously arrange fixing structures 1d on the two side connecting beams 1 respectively, so as to fix the adjusted length of the connecting beam 1 by the fixing structures 1 d. At this time, through making the length of both sides tie-beam 1 adjustable to set up the fixed knot who is used for fixed tie-beam 1 length constructs, it alright do benefit to and satisfy the wheelbase change between the different motorcycle types, and make preceding, back sub vehicle frame become the sharing piece, and then help realizing the platformization design, in order to reduce whole car research and development cost.
In particular, the length adjustment position of the two side connecting beams 1 may be indicated by reference a in fig. 1, and, as shown in fig. 18, to achieve the length adjustment of the connecting beams 1, for example, two longitudinal beam segments 1c disconnected at the reference a may be plugged, and at the same time, the fixing structure 1d may be in a form of a threaded sleeve and a bolt.
The threaded sleeve can be fixed in one of the longitudinal beam sections 1c, and the two longitudinal beam sections 1c are respectively provided with a plurality of connecting through holes, and the connecting through holes on the longitudinal beam sections 1c positioned on the outer side are arranged at intervals. After the length of the connecting beam 1 is adjusted, the length of the connecting beam 1 can be adjusted and the adjusted length of the connecting beam 1 can be fixed by screwing the bolts into the threaded sleeves through the connecting process after the plugging lengths of the two longitudinal beam sections 1c are adjusted.
In addition, when the length of the both-side connecting beam 1 is adjustable, the side step mounting plates 6 provided on the side of each side connecting beam 1 facing the outside of the vehicle should be detachably connected to the connecting beam 1. In addition, in the concrete implementation, the side pedal mounting plate 6 with a proper length can be manufactured according to the adjusted length of the connecting beam 1, and the side pedal mounting plate is connected to the outer side of the connecting beam 1 after the length of the connecting beam 1 is fixed.
The vehicle chassis of this embodiment adopts the structure as above, through the setting of the tie-beam 1 of battery package 2 both sides to and the inside crossbeam 202 in the battery package 2, when the vehicle takes place the side and bumps, the tie-beam 1 of lateral part can collapse the energy-absorbing to can transmit the dispersion to collision force, the inside crossbeam 202 of battery package 2 inside also can provide the support simultaneously, protect the module etc. in the battery package 2 not atress, consequently this embodiment can increase the ability that battery package 2 should bump to the side, and increase the effect that the safety was bumped to battery package 2 side.
In addition, on the basis of providing the two-side connecting beams 1, particularly by connecting the two-side connecting beams 1 between the front sub-frame and the rear sub-frame, the present embodiment can connect the front sub-frame and the rear sub-frame via the connecting beams 1 on the two sides on the basis of the conventional load-bearing vehicle body, so that the load-bearing vehicle body structure with the front sub-frame and the rear sub-frame can be adopted to utilize the characteristic of smaller weight of the load-bearing vehicle body to realize the light weight of the vehicle body, and the cruising ability of the whole vehicle can be improved.
Through the setting of both sides tie-beam 1 to link to each other preceding, back sub-frame, and by preceding crossbeam 404, rear cross-beam 504 and both sides tie-beam 1 jointly inject battery package installation space Q, the chassis structure of this embodiment also can constitute battery package annular frame structure with the help of the connection setting of tie-beam 1. Can make battery package 2 can move along with the annular frame structure at the time of the collision, can reduce the collision impact that battery package 2 received, the collision security of multiplicable battery package 2 to can promote whole car security quality.
In addition, it should be noted that, in the chassis structure of the present embodiment, since the front end and the rear end of the chassis are still the front sub-frame and the rear sub-frame, the sub-frame structure is smaller than the Y-directional cross section of the frame in the non-load-bearing vehicle body, and the sub-frame position longitudinal beam adopts the curved longitudinal beam structure, the chassis structure of the present embodiment is a structural innovation of the sub-frame, and is significantly different from the conventional non-load-bearing frame girder structure. Specifically, the front subframe and the rear subframe in the embodiment are still separate units, and the front-rear connection connecting beam 1 is further added on the basis of the front subframe and the rear subframe in the bearing type vehicle body, and the front-rear connection connecting beam is not an integral girder structure in the bearing type vehicle body.
Of course, in the implementation form of connecting the connecting beam 1 with the front and rear sub-frames, the integral structure of the front and rear sub-frames connected by the connecting beam 1 is adopted, so that the embodiment can not only utilize the characteristics of the bearing type vehicle body structure to reduce the weight of the vehicle body so as to increase the whole vehicle endurance, but also form the annular protection frame of the battery pack so as to better improve the collision safety of the battery pack 2. Therefore, the vehicle body structure not only improves the defects of the bearing type vehicle body structure, but also has the advantages of the non-bearing type vehicle body structure, and the overall quality of the vehicle can be well improved, so that the vehicle body structure has good practicability.
Example two
The present embodiment relates to a vehicle, which is specifically a new energy vehicle type provided with a battery pack, and specifically, which is preferably a pure electric vehicle type, while a vehicle chassis in embodiment one is provided in the vehicle.
It should be noted that, on the basis of the vehicle chassis in the first embodiment, when the vehicle in the first embodiment is assembled in a final assembly, the sub-frame which is still the bottom is assembled to the vehicle body in the same manner as the existing load-bearing vehicle body, and the upper vehicle body skeleton is the load-bearing main body in the vehicle, and the chassis accessories are assembled to the vehicle body by means of the front sub-frame and the rear sub-frame. In addition, when the vehicle collides, the upper vehicle body framework, the front auxiliary frame, the rear auxiliary frame and the connecting beam 1 in the chassis are involved in the absorption and transmission of collision force, and the transmission and the energy absorption are not carried out by the frame girder independently like a non-bearing vehicle body.
The vehicle of the present embodiment is advantageous in that the safety of the battery pack 2 at the time of side collision is improved by providing the vehicle chassis of the first embodiment, on the one hand, by providing the connection beams 1 on both sides of the battery pack 2 and the inner cross member 202 in the battery pack 2.
On the other hand, the connection beams 1 are arranged on the two sides, and particularly the connection beams 1 are connected between the front auxiliary frame and the rear auxiliary frame, so that the front auxiliary frame and the rear auxiliary frame can be connected through the connection beams 1 on the two sides on the basis of a traditional bearing type automobile body, the automobile body is light, the whole automobile endurance can be improved, the collision impact received by the battery pack 2 can be reduced, the collision safety of the battery pack 2 is improved, the safety quality of the whole automobile can be improved, and the automobile has good practicability.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
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| CN202311276974.8A CN119705622B (en) | 2023-09-28 | 2023-09-28 | Vehicle chassis and vehicles |
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| CN202311276974.8A CN119705622B (en) | 2023-09-28 | 2023-09-28 | Vehicle chassis and vehicles |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211195886U (en) * | 2019-08-10 | 2020-08-07 | 合肥易来电科技有限公司 | New forms of energy electric automobile battery package backplate mounting structure |
| CN115946781A (en) * | 2022-12-29 | 2023-04-11 | 浙江零跑科技股份有限公司 | Frame structure and car |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP7010021B2 (en) * | 2018-01-22 | 2022-01-26 | トヨタ自動車株式会社 | Vehicle undercarriage |
| CN219295520U (en) * | 2022-10-21 | 2023-07-04 | 阿尔特汽车技术股份有限公司 | Expandable mechanism and vehicle |
| CN219163590U (en) * | 2022-12-30 | 2023-06-09 | 未势能源科技有限公司 | Battery pack frame structure and vehicle |
| CN219406642U (en) * | 2023-03-10 | 2023-07-25 | 长城汽车股份有限公司 | Front floor assembly of vehicle body and vehicle |
| CN219728329U (en) * | 2023-04-18 | 2023-09-22 | 长城汽车股份有限公司 | Vehicle body middle structure and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211195886U (en) * | 2019-08-10 | 2020-08-07 | 合肥易来电科技有限公司 | New forms of energy electric automobile battery package backplate mounting structure |
| CN115946781A (en) * | 2022-12-29 | 2023-04-11 | 浙江零跑科技股份有限公司 | Frame structure and car |
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